/*
 * Copyright (C) 2012 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.photoeditor.demo.model.image.collage.util;


import android.content.Context;
import android.os.SystemClock;
import android.view.MotionEvent;

import com.muiltitouch.RotateGestureDetector;
import com.muiltitouch.ScaleGestureDetector;
import com.photoeditor.demo.model.image.gl.DownUpDetector;

// This class aggregates three gesture detectors: GestureDetector,
// ScaleGestureDetector, and DownUpDetector.
public class CollageGestureRecognizer {
    @SuppressWarnings("unused")
    private static final String TAG = "CollageGestureRecognizer";

    public interface Listener {
        boolean onSingleTapUp(float x, float y);
        boolean onSingleTapComfirm(float x, float y);
        boolean onDoubleTap(float x, float y);
        boolean onScroll(float x, float y, float dx, float dy, float totalX, float totalY);
        boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY);
        boolean onScaleBegin(float focusX, float focusY);
        boolean onScale(float focusX, float focusY, float scale);
        void onScaleEnd();
        boolean onRotaionBegin();
        boolean onRotaion(float delta);
        void onRotaionEnd();
        void onDown(float x, float y);
        void onUp(float x, float y);
        void onLongPress(float x, float y);
    }

    private final GestureDetector mGestureDetector;
    private final ScaleGestureDetector mScaleDetector;
    private final DownUpDetector mDownUpDetector;
    private final RotateGestureDetector mRotationDetector;
    private final Listener mListener;

    public CollageGestureRecognizer(Context context, Listener listener) {
        mListener = listener;
        mGestureDetector = new GestureDetector(context, new MyGestureListener(),
                null, true /* ignoreMultitouch */);
        mScaleDetector = new ScaleGestureDetector(
                context, new MyScaleListener());
        mDownUpDetector = new DownUpDetector(new MyDownUpListener());
        mRotationDetector = new RotateGestureDetector(context, new MyRotationListener());
    }

    public void onTouchEvent(MotionEvent event) {
        try {
            int count = event.getPointerCount();
            if (count == 1) {
                mGestureDetector.onTouchEvent(event);
                mDownUpDetector.onTouchEvent(event);
            } else if (count == 2) {
                mScaleDetector.onTouchEvent(event);
                mRotationDetector.onTouchEvent(event);
            }
        } catch (Exception e) {
        }
    }

    public void onGraffitoViewTouchEvent(MotionEvent event) {
        int count = event.getPointerCount();
        mGestureDetector.onTouchEvent(event);
        if(count == 1) {
            mDownUpDetector.onTouchEvent(event);
        } else if(count == 2){
            mScaleDetector.onTouchEvent(event);
        }
    }

    public void onGalleryItemTouchEvent(MotionEvent event) {
        int count = event.getPointerCount();
        if(count == 1) {
            mGestureDetector.onTouchEvent(event);
            mDownUpDetector.onTouchEvent(event);
        }
//        mScaleDetector.onTouchEvent(event);
    }

    public boolean isDown() {
        return mDownUpDetector.isDown();
    }

    public void cancelScale() {
        long now = SystemClock.uptimeMillis();
        MotionEvent cancelEvent = MotionEvent.obtain(
                now, now, MotionEvent.ACTION_CANCEL, 0, 0, 0);
        mScaleDetector.onTouchEvent(cancelEvent);
        cancelEvent.recycle();
    }

    private class MyGestureListener
            extends GestureDetector.SimpleOnGestureListener {
        @Override
        public boolean onSingleTapUp(MotionEvent e) {
            return mListener.onSingleTapUp(e.getX(), e.getY());
        }

        @Override
        public boolean onDoubleTap(MotionEvent e) {
            return mListener.onDoubleTap(e.getX(), e.getY());
        }

        @Override
        public boolean onScroll(
                MotionEvent e1, MotionEvent e2, float dx, float dy) {
            return mListener.onScroll(e2.getX(), e2.getY(),
                    dx, dy, e2.getX() - e1.getX(), e2.getY() - e1.getY());
        }

        @Override
        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
                               float velocityY) {
            return mListener.onFling(e1, e2, velocityX, velocityY);
        }

        @Override
        public boolean onSingleTapConfirmed(MotionEvent e) {
            return mListener.onSingleTapComfirm(e.getX(), e.getY());
        }

        @Override
        public void onLongPress(MotionEvent e) {
            mListener.onLongPress(e.getX(), e.getY());
        }
    }

    private class MyScaleListener
            extends ScaleGestureDetector.SimpleOnScaleGestureListener {
        @Override
        public boolean onScaleBegin(ScaleGestureDetector detector) {
            return mListener.onScaleBegin(
                    detector.getFocusX(), detector.getFocusY());
        }

        @Override
        public boolean onScale(ScaleGestureDetector detector) {
            return mListener.onScale(detector.getFocusX(),
                    detector.getFocusY(), detector.getScaleFactor());
        }

        @Override
        public void onScaleEnd(ScaleGestureDetector detector) {
            mListener.onScaleEnd();
        }
    }

    private class MyDownUpListener implements DownUpDetector.DownUpListener {
        @Override
        public void onDown(MotionEvent e) {
            mListener.onDown(e.getX(), e.getY());
        }

        @Override
        public void onUp(MotionEvent e) {
            mListener.onUp(e.getX(), e.getY());
        }
    }

    private class MyRotationListener implements RotateGestureDetector.OnRotateGestureListener {

        @Override
        public boolean onRotate(RotateGestureDetector detector) {
            return mListener.onRotaion(detector.getRotationDegreesDelta());
        }

        @Override
        public boolean onRotateBegin(RotateGestureDetector detector) {
            return mListener.onRotaionBegin();
        }

        @Override
        public void onRotateEnd(RotateGestureDetector detector) {
            mListener.onRotaionEnd();
        }
    }
}
